This is the best book K.S.Robinson has ever written (good though Red Mars and Antarctica were). It is also one of the best books I have ever read. It is also unlike any other book I've read (and I've read it four times).
It is pointless trying to explain or summarise the story, except that for me, from the first page to the last, it is essentially a metaphor on life. I only came to this conclusion after reading it twice, but since then this book has fascinated me.
This is a short book that leaves as many questions unanswered as it provokes. Keep an open mind and don't be afraid to read it more than once. It is wonderful and brilliant!